Lime sifter



Julyl 23, 1957 F. KIGER 2,800,227

LIME SIFTER Filed NOV. 1, 1955 Fred K/'g er INVENToR.

BY www@ MJ;

United States Patent O LIME SIFTER Fred Kiger, Downers Grove, lll.

Application November 16, 1955, Serial No. 547,287

2 Claims. (Cl. 209-262) The present invention relates to new and usefulimprovements in sifters particularly for slacked lime and has for itsprimary object to provide, in a manner as hereinafter set forth, adevice of this character which will completely eliminate all unslackedparticles in the lime while at the same time speeding up the screeningprocess.

Other objects of the invention are to provide a readily movable limesifter or screen of the aforementioned character which will becomparatively simple in construction, strong, durable, compact, of lightweight and which may be manufactured at low cost.

These together with other objects and advantages which will becomesubsequently apparent reside inthe details of construction and operationas more fully hereinafter described and claimed, reference being had tothe accompanying drawings forming a part hereof, wherein like numeralsrefer to like parts throughout, and in which:

Figure l is a perspective view of a lime sifter constructed inaccordance with the present invention;

Figure 2 is a view in vertical longitudinal section through the device;

Figure 3 is a fragmentary view in horizontal section through the lowerportion of the lime box, showing the several screens;

Figure 4 is a fragmentary view in vertical section through the lowerportion of the lime box with the removable screens omitted;

Figure 5 is a fragmentary view in vertical section through a portion ofthe removable screen unit; and

Figure 6 is a cross-sectional view through the plunger, takensubstantially on the line 6 6 of Figure 1.

Referring now to the drawing in detail, it will be seen that theembodiment of the invention which has been illustrated comprises ahorizontally elongated, substantially sled-like frame of tubular metalwhich is designated generally by reference character 10. The frame 10includes a pair of spaced, parallel, substantially U-shaped members 11the lower legs 12 of which are engageable on a support. Rising from thelower legs 12 of the members 11 at a point remote from the bightportions of said members are pairs of upwardly converging braces 13. Theframe members 12 terminate in upwardly and reversely bent end portions14 which are aixed to the upper ends of the braces 13. The free endportions of the upper legs 15 of the members 11 are affixed to thebraces 13 at intermediate points.

Mounted on the frame 10 at an intermediate point is a box 16 of suitablemetal for the reception of the lime. The box 16, which is open at itstop, comprises front and rear walls 17 and 18, respectively, of arcuatecross-section. The box 16 is axed, as by welding, to the members 12 and15 of the frame 10.

The bottom of the box 16 comprises an inturned flange 19 (see Figure 4).Permanently secured as by welding on the flange 19 is an open or largemesh screen 20.

Removably mounted in the box 16 is a screen unit 21. The removablescreen unit 21 comprises a metallic frame ice 22 of angularcross-section which is adapted to rest on the flange 19 of the box 16with a gasket 23' interposed therebetween. Mounted in the frame 22 is aplurality of screens 23, 24 and 25. The intermediate element 24 is a flyscreen while the outer screens 23 and 25 are of oneeighth inch mesh. Themarginal edges of the screens 23, 24 and 25 are soldered or weldedtogether, as at 26.

Transverse braces 27 and 28 extend between the end portions of themembers 11 of the frame 10. Pivotally secured, as at 29, for swingingmovement in a vertical plane on the upper end portions of the braces 13is a substantially rectangular lever or handle 30. Rigidly secured byarms or hangers 31 on the handle 30 at an intermediate point is aplunger 32 for engagement in the box 16. Sealing strips 33 (see Figure6) are mounted on the edges of the plunger 32. Coil springs 34 have oneend connected to the brace 28 of the frame 10 and their other endsconnected to the handle 30 at an intermediate point for raising saidhandle with the plunger 32 thereon to retracted or inoperative position.

It is thought that the operation or use of the device will be readilyapparent from a consideration of the foregoing. Briefiy, the box 16 isfilled to the desired level with the slacked or soaked lime. The handle30 is then swung downwardly against the tension of the coil springs 34for forcing the lime through the screens 23, 24, 25 and 20. Whenreleased, the handle 30 is returned to raised position by the springs 34and the operation may be repeated as many times as may be necessary ordesirable. After the device has been used, the unit 21 may be readilyremoved from the box 16 to facilitate cleaning the screens. Thecurvature of the box walls 17 and 18 coincides with the arc described bythe swinging plunger 32.

The foregoing is considered as illustrative only of the principles ofthe invention. Further, since numerous modifications and changes willreadily occur to those skilled in the art, it is not desired to limitthe invention to the exact construction and operation shown anddescribed, and accordingly all suitable modifications and equivalentsmay be resorted to, falling within the scope of the invention asclaimed.

What is claimed as new is as follows:

1. A lime sifter of the character described comprising:V a horizontallyelongated metallic frame, a box, for the reception of lime, mounted onsaid frame at an intermediate point, said box including a foraminousbottom, a substantially rectangular handle pivotally mounted forswinging movement in a vertical plane on the frame, a plunger mounted atan intermediate point on said handle and engageable in the box forforcing the lime through the foraminous bottom, and coil springs havingone end connected to the frame and their other ends connected to thehandle for disengaging the plunger from the box.

2. A lime sifter of the character described comprising: a frame, a box,for the reception of lime, mounted on said frame, said box being open atits top and bottom and including an internal flange on said bottom, alarge mesh screen aixed to said ilange, a removable screen unit mountedin the box and including a metallic frame engageable on theV flange andfurther including a plurality of screens fixed in the second-namedframe, a handle pivotally mounted for swinging movement in a verticalplane on the first-named frame, a plunger on said handle engageable inthe box for forcing the lime through the screens, and coil springsconnected to the handle for disengaging the plunger from the box.

1,755,364 Royer Apr. 22, 1930

